.login_box{
  width: 400px;
  position: fixed;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  .ant-col-16{
    max-width: 100%;
  }
  a{
    color: #1890ff;
    &:hover{
      text-decoration: underline;
    }
  }
  .logo{
    display: block;
    margin: 0 auto 20px;
  }
}